Luckily, the couple's three children were away at school when the shooting took place. However, the Prestons were hosting another couple as houseguests. One of the guests called the police after hearing roughly 10 gunshots. The audio from his 911 call was released Tuesday.

"We're staying with some friends and they both went upstairs into the master bedroom and I have not gone up there yet, me and my wife are here visiting from Washington state," the unidentified man is heard saying on the call.

"I did, I did hear her hollering his name," he said.

"And was that just before the shots went off or was that during when the shots went off?" the 911 dispatcher asks.

"Nope it was during, it was during," he responds.

Johnathan was an executive at Microsoft, and the family moved frequently. They had lived in China once, and just under a year ago started renting in North Carolina after moving from Seattle. One neighbor said they were about to move back.

The man who called 911 told reporters the Prestons had been fighting in the morning, but were not when they both went upstairs before the shooting.